Ingredients

  • 12 cup unsalted butter, at room temperature
  • 12 cup granulated sugar
  • 12 cup brown sugar
  • 1 large egg
  • 1 teaspoon pure vanilla extract
  • 1 12 cups all-purpose flour
  • 14 cup unsweetened cocoa powder
  • 12 teaspoon baking soda
  • 12 teaspoon baking powder
  • 12 teaspoon salt
  • 12 cup milk chocolate chips
  • 12 cup semi-sweet chocolate chips

Method

  • Heat oven to 350F
  • Cream the butter and sugars.
  • Add the egg and vanilla.
  • Sift together the flour, cocoa, baking soda, baking powder, and salt, then add the dry mixture to the butter mixture.
  • Fold in the chocolate chips.
  • Form the dough into 1 1/2-inch balls and bake on parchment paper-lined baking sheets, 2 inches apart.
  • Bake until the centers are just set, about 12 minutes.
  • Let cool on sheets 5 minutes, then transfer to wire racks.